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Germicidal UVC Lights Improve Clinical Pregnancy Rates for IVF Lab, New Study Finds
Date:9/9/2008

BETHLEHEM, Pa., Sept. 9 /PRNewswire/ -- A seven and a half-year study conducted in the In Vitro Fertilization Cleanroom Laboratory of the Lehigh Valley Hospital and Health Network found that the use of ultraviolet C or "UVC" lights installed in the HVAC system had a clinically significant impact on clinical pregnancy rates (CPR). In presenting the findings at the annual meeting of the American Society for Reproductive Medicine (ASRM), Kathryn C. Worrilow, Ph.D. reported that the + beta and CPR increased by an average of 17.8% and 18.2%, respectively, following 10 of the 13 change-outs of the Steril-Aire UVC Emitters(TM) over the test period.

Clinical success in an IVF lab is critically dependent upon the quality of the ambient air, which in turn, is directly dependent upon the HVAC system. The study led by Dr. Worrilow tracked three key components in the HVAC system -- particulate filters, gas phase filters and UVC lights -- and the timing of their replacement -- to determine whether these individual components affected markers of preimplantation embryogenesis and clinical pregnancy rates.

According to the findings, "There were no statistically significant differences...associated with the replacement of the particulate or gas phase filters in Testing Quarters 1-48. In contrast, immediately following 10 of the 13 UVC Emitter change-outs, the + beta hCG and clinical pregnancy rates increased 17.8% and 18.2%, respectively."

The study goes on to say: "UVC energy will destroy 90 -- 99% of airborne microbial contaminants. By targeting the DNA and RNA of microorganisms, UVC degrades and abates the proliferation of airborne and surface embryotoxic organics. Of equal significance to the developing embryo is the suggested impact of UVC irradiation on the degradation of VOCs. Our work has demonstrated that VOC levels as low as 2.2 ppb can be embryotoxic to the embryo cultured in vitro."

The authors conclude: "Although the use of UVC light re
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SOURCE Steril-Aire, Inc.
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